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arXiv 0912.3445math-phmath.MPphysics.atom-phphysics.chem-ph
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软核库仑势与Heun微分方程

Soft-core Coulomb potentials and Heun's differential equation

Richard L. Hall, Nasser Saad, K. D. Sen

摘要:

本文证明了具有吸引势V(r)= -Z/(r^q+ b^q)^(1/q),Z > 0,b > 0,q >= 1的Schroedinger方程,对于参数Z和b的一般值,在q=1时可约化为合流Heun方程,在q=2时可约化为广义Heun方程.在具有正确渐近性的公式中,本征态被先验地指定为未知因子。在某些特殊情况下,该因子变成多项式。渐近迭代法用于明确地找到多项式因子和相关的特征值,或者为它们构造精确的近似。针对这两种情况给出了详细的解决方案。

英文摘要:

Schroedinger's equation with the attractive potential V(r) = -Z/(r^q+ b^q)^(1/q), Z > 0, b > 0, q >= 1, is shown, for general values of the parameters Z and b, to be reducible to the confluent Heun equation in the case q=1, and to the generalized Heun equation in case q=2. In a formulation with correct asymptotics, the eigenstates are specified a priori up to an unknown factor. In certain special cases this factor becomes a polynomial. The Asymptotic Iteration Method is used either to find the polynomial factor and the associated eigenvalue explicitly, or to construct accurate approximations for them. Detail solutions for both cases are provided.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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